DitherCamera for Raspberry Pi Zero W
AS-289R2 Thermal Printer Shield
Raspberry Pi Zero W
Raspberry Pi Camera Module V2
RPi Zero W (TxD) -> (RxD) AS-289R2
RPi Zero W (GND) -- (GND) AS-289R2
RPi Zero W (GPIO18) -- (N.O.) シャッターSW
RPi Zero W (GND) -- (COM) シャッターSW
シャッターが押されるとカメラで撮影、画像の回転とリサイズを行いimage.bmpを生成します。 次にimagemagickを使ってimage.bmpをグレースケールに変換、ディザリング処理により画像を2値化変換しimage1.bmp(横384px、縦512px、1bpp)を生成します。 最後にimage1.bmpをAS-289R2に出力します。
sudo apt-get update
sudo apt-get install imagemagick
シリアルコンソールとBluetoothを止めて、汎用UARTとして利用するには下記作業が必要です。
/boot/cmdline.txt中の「console=serial0,115200」を削除
/boot/config.txtに「enable_uart=1」と「dtoverlay=pi3-disable-bt」を追加
Dither Camera for RPi Zero W
NADA ELECTRONICS, LTD.
Copyright (c) 2017 Takehiro Yamaguchi, MIT License
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